Simplify the following polynomial expression: (5x2 – 9x + 2) + (-3x2 + 2x + 7) + (2x2 + 3) (22 – 5)
4x4 – 522 – 7x - 6
4x4 – 5x2 + 7x + 6
4x4 – 9x2 – 7x + 24
4x4 - 9x2 – 7x – 24

Aparking lot is to be 400 feet wide and 370 feet deep. how many standard-sized cars fit in this lot considering a double-loaded (w4) two way traffic set up, an angle of 90° and a sw of 9’ 0’’? (do not consider handicapped parking spaces, and consider 15’ for turning aisles). show your work.

If there is 20 dogs in the shelter and 5 dogs get homes, and then 43 more dogs come. how many dogs are there in the shelter?

X+y=-4 x-y=2 use elimination with adding and subtraction